The answer would be A. This is because the answer takes the information from the question and molds it into a statement. The other answers add unknown information to the statement, which makes it more confusing and unrelated to the actual claim.
I suggest you look up the modern English definition and find out if it is a verb or not and go on pairing the words from there. We did an assignment like this in class last year, and that's what my teacher suggest we should do.
C. motherhood you could have just use the process of elimination
Both of these requests are similar in the sense that they both involve parents asking others to monitor their children and be attentive to what they are doing. Polonius wants someone to watch over Ophelia, while Claudius and Gertrude want Rosencratz and Guildenstern to watch over Hamlet. Shakespeare wants to show how, even though both of these are requests of parents who want their child watched, the intention and consequences in each case are very different.